Combination clutch and brake control



H. L. JOHNSON.

COMBINATION CLUTCH AND BRAKE CONTROL.

APPLICATION FILED IAN. 22. |919.

1 ,359,385, Patented Nov. 16, 1920.

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sensation :Filed January 22, 19319,. Serial No. f-Zte.

T 0 all whom it may concern.'

Be it known that l, HAvwAnn L. JOHN- soN, citizen of the United States of America, residing; at Moline, in the county of Elk and State of Kansas, have invented new and useful improvements in Combinaltion Clutch and Erake montrol, of which the folio-wir c' is a specifielfion.

The object of the invention is to provide a device for use in conjunctionwith the clutch peddle and brake lever of an auto vehicle, vwhereby the clutch cannot be thrown in when the brake is set, or the brake operated without throwing out the clutch. To this end vthe invention comprises a connection betweenv the clutch pedal and the brake lever, which positively effects theobject recited above, but accomplishes this object in such a way that the clutch is under full control-that is, it can be thrown in or out-when the brake lever is inthe position where the brake is released. l

ln the accompanying drawings in which the same numerals 'of reference designate the same partsmeans of a fork 3 which straddles and op' eratively engages a thimble l connected with the driven element. This fork 3 is carried by, and depends from a transversalljv disposed rock-shaft 5 which a foot pedal Sis connected, for the obvious pur. pose of operating the driven clutch element 2.

The brake lever 7 shown is oi the usual character, and has pivotally connectedY thereto, a'link 8, the forward end only of which is shown, but which is presumed to connect with and operate on the usual brake mechanisin at the rear of the vehicle. The brake lever 7 carries a spring latch 9 which is engagable with a tooth sector 10, for the purpose of securing the brake lever in its various adjusted positions, and thereby to hold the brakes on or off.

Mounted upon the shaft 5 between the fork -3 and pedal 6 there is an arm 11, the fork.. end, 12, ofwhich receives between the forks one end of a rod 13 which pivotally engages a pin 1d secured in the legs of the forks. it 'the end remote from this pivotally connected end, the rod connects with a slide-bearing; 15,1this connection being; rigid, and this slide-bearing carries a slide 16 with which a rod 1'? is threadingly engaged, the latter passing loosely through an eye formed in that end of the slide-bearing; remote from that end which connects with rod 13. This rod 17 at the remaining end is pivotally connected, as at 18, tothe brake lever 7.

1n the operation of the device', the position of the brake lever as shown in Figi,

is the position in which the brakes are released. ln such a position the slide is farthest removed from that end of the slidebearingI which connects with the rod 13, but

such position of these parts permits the rock-shaft 5 to assume a position that will allow the driven element 2 to engage the driving element 1. Depression of the foot lever 6 will affect disengagement of the two clutch elements by moving the element 2 backwardly, such a move imparted to the pedal rocking the shaft 5 and causing "the fork to draw the element 2 away froin the element l, and this without interference from the brake lever 7, inasmuch as the slide-bearing; may move relative to the slide. Thus the clutch may be thrown in or out with the brakes off. if the brakes are thrown on, however, the slide 16 abuts that end of the slide-bearing through which the rod 17 passes, and in that way exerts a pull on the arm 11, thus rocking the shaft 5 to draw the clutch element 2 out of engagement with the clutch element 1, so with the setting of the brakes the clutch is automatically disconnected. Also the clutch is recluded from being thrown in with the hralre set as the connection between the lever 7 and the arm 13 will not permit the shaft 5 to be rocked in the direction 'necesl sary for affecting the throwing in of the clutch.

The invention having been described what is claimed as new and useful, is: l

T he combination with the hand brake lever-and driven clutch element of an auto vehicle, of e. transversely disposed rock Y shaft, the driven clutch element being formed with a thimble, a foot pedal connected with the rock shaft and provided at one extremity with a. fork operatively engaging the thimble, an arm connected with the rock shaft, erod having one end pivotally connected to the extremity of said arm and the other end formed with a slide bearing, a slide mounted in said slide beering, and a. rod having one end pivotally connected tothe hand lever and the other end fixedly connectedto said slide, the rod passing slidably through that"end of theA slide bearing remote from the rod with which the slide bearing is formed, whereby the driven yclutch element `mey be thrown into and out of operative position by the pedal to reclude it from oelng thrown into operative position except when the brake lever is in released position.

ln testimony whereof l aliix my signature.

HYWARD L. JUHNSON. 

